Mark Bennett <mark.benn...@public.co.nz> writes: > Update: > > For the WD10EARS, the blocks appear to be aligned on the 4k boundary > when zfs uses the whole disk (whole disk as EFI partition). > > Part Tag Flag First Sector Size Last Sector > 0 usr wm 256 931.51Gb 1953508750 > > calc 256*512/4096=32
I'm afraid this isn't enough. if you enable compression, any ZFS write can be unaligned. also, if you're using raid-z with an odd number of data disks, some of (most of?) your stripes will be misaligned. ZFS needs to use 4096 octets as the basic block to fully exploit the performance of these disks. -- Kjetil T. Homme Redpill Linpro AS - Changing the game _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
